Improved well-boring apparatus



UNITED STATES PATENT @Errea THOMAS J. PARKE, OF PHILADELPHIA,PENNSYLVANIA, ASSIGNOB T0 HIM- SELF, JOSIAH BRYAN, ISRAEL GILLESPIE, ANDE. A. HUNTSIGKER, OF

SAME PLACE.

IMPROVED WELL-BORING APPARATUS. n

Specication forming part of Letters Patent No. 53,232, ldated March 13,1866 antedated November 8,1865.

To all whom t may concern.'

Be it known that I, T. J. PARKE, of Philadelphia, Pennsylvania, haveinvented certain Well-Borin g Apparatus; and I do hereby declare thefollowing to be a full, clear, and eX- act description of the same,reference being had to the accompanying drawings, and to the letters ofreference marked thereon.

My invention consists of an arrangement, fully described hereinafter, ofdevices which form an efficient and economical apparatus for boringArtesian wells.

In order to enable others skilled in the art to make and use myinvention I will now Aproceed to describe its construction and opertion.

On reference to the accompanying drawings, which form part of thisspecification, Figure lis a sectional elevation of my improvedwellboring apparatus, and Fig. 2 a plan view.

A is the frame-work of the machine in suitable bearings, secured towhich turn the two shafts B and C, the latter carrying adrum, D. On oneend ofthe shaft B is a frictionpulley, E, and on the end of the shaft Cis a similar but larger pulley, F, and to the bearing of the latterpulley is secured a rod, c, by means of which the said bearing may beelevated and the pulley F be brought in contact with the pulley E.

To the shaft B is secured a band-pulley, G, and on the end of lthe shaftnearest the drum D is a wheel, H, in the face of which is a cam, b, thelatter having a curved edge, x, and a straight edge, y. A

From a plate, I, which is secured to a crosspiece, A', of the frame d,projects four grooved guide-pulleys, c c c' c', between which slides abar, J, and from the latter projects a pin, d, which bears against theedge ofthe cam b.

To the upper end of the plate J is jointed one end of a link, K, theother end bein g jointed to a lever, L, hung to a pin, f, which isadjustable in a slot, n, in the plate I, and which has a number ofopenings, for a purpose described hereinafter.

To a cross-piece, B', directly under the lower end of a plate, `J, is ametal cup, M, in which is a block of rubber or other elastic material.

To the outer end of the arm L is connected the lower end of a screw-rod,N, which passes through a box, O, and.on the said rod is a nut, i, whichtits nicely in a circular opening in the said boX O, and between the nutand the bottom of the box is a spiral spring, K. To this box O issecured a yoke, P, at the upper end of which is an eye adapted toreceive a hook attached to a plate, n, and to the said plate is clampeda plate, n', for a purpose described hereinafter.

The rope X, to which the drill is attached, is wound round the drum D,and passes from the latter between the plates n and n', the plates beingclamped together so as to secure the rope. Motion in the direction ofthearrow is then imparted to the shaft B, and the plate J is thus graduallyraised, while the curved edge of the cam remains in cont-act with thepin d,

but falls suddenly when the straight edge of the cam is in contact withthe piu, a corresponding motion being imparted to the lever L and theparts connected therewith, so that the drill is alternately graduallyraised and suddenly lowered. As the bar J descends its lower end isbrought in contact with the rubber in the cup M, and the machine is thusrelieved from the sudden jars it would otherwise be subjected to owingto the repeated shocks imparted by the descent ofthe plate. By the use,also, of the box O with its spring K the slack in the rope, whichresults from thev rebound in the drill, or from other causes, is takenup.

As the drill descends the rope is continually fed upward by turning therod N, so as to elevate the box O with its yoke P. When, however, theboX is at the upper end of the rod the rope is released from theclamp-plates n n', the boX O is again brought to the lower end of therod, and the clamp-plates are secured to the rope at a point below thatto which they were first attached.

It will be apparent that the height to which the drill is raised may bereadily regulated by the distance from the fulcrum of the lever L atwhich the lower end o f the rod N is secured.

When the drill has to be raised from the well the rope X is releasedfrom between the clamp-plates n n', and the rod a is raised so as tobring the pulley E into contact with the pulley F, which, with its shaftand the drum, will thus be caused to revolve in the direction of thearrow, Fig. 1, so as to wind up the rope on the drum and raise thedrill. When the drill has to be lowered it is allowed to descend by itsown weight, the ropeXis again secured between the clamp-plates, and theoperation proceeds as before.

I claim as my invention and desire to secure by Letters Patentl. Thecam-Wheel H, plate J, with its pin d, and the arm L, constructed andoperating in combination with each other, and the rope to which arock-drill is attached, substantially as described.

2. The screw-rod N secured to a vibrating scribing,` Witnesses.

THOS. J. PARKE.

Witnesses:

CHARLES E. FOSTER, J oHN WHITE.

